双隐身飞机相干干扰对单脉冲雷达影响及影响有效性研究

王春阳; 刘明杰; 曾会勇; 周长霖

doi:10.15918/j.tbit1001-0645.2021.185

双隐身飞机相干干扰对单脉冲雷达影响及影响有效性研究

doi: 10.15918/j.tbit1001-0645.2021.185

空军工程大学防空反导学院，陕西，西安　710051

基金项目: 国家自然科学基金资助项目（61701527）

详细信息

作者简介:
王春阳（1967—），男，博士，教授，博士生导师，E-mail: wangcy_kgd@163.com

通讯作者:
刘明杰（1997—），男，硕士生，E-mail: 1401628856@qq.com

中图分类号: V218；TN972
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- HTML全文浏览量: 98
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2021-07-02
- 刊出日期: 2022-08-17

Influence of Dual Stealth Aircraft Coherent Jamming on Monopulse Radar and Impact Effectiveness Study

Air and Missile Defense College , Air Force Engineering University , Xi’an, Shaanxi 710051, China

摘要

摘要: 针对当前关于双隐身飞机编队相干干扰对单脉冲雷达具体影响分析不足及误差有效性缺乏合理评价的问题，考虑双机回波相位差的随机性特点，建立了双隐身飞机相干干扰模型和角度误差评价模型. 设定双机突防运动场景，提取双机动态RCS，推导回波作用下的双机相干干扰引起的随机性角度误差计算式，求解随机性角度误差的一阶数字特征，并根据脱靶距离建立了角度误差有效性影响评价准则，解算角度误差的有效影响概率. 仿真表明：双隐身飞机相干干扰产生的角度误差均值较大，随机起伏性较弱，干扰效果较好，且误差对雷达影响有效概率较大，保证了编队突防安全性.
- 单脉冲雷达 /
- 双隐身飞机编队 /
- 相干干扰 /
- 随机性角度误差 /
- 误差有效性概率
Abstract: Due to the insufficient analysis on the specific impact of dual stealth aircraft formation self-defense coherent jamming on monopulse radar and the lack of rational evaluation to error effectiveness, considering the random characteristics of the phase difference between the dual aircraft echoes, a dual stealth aircraft coherent jamming model and an angle error evaluation model were established. Setting the track of dual aircraft and extracting the dynamic RCS of dual aircraft, a calculation formula was deduced for the random angle error caused by the dual aircraft coherent jamming under the echo. And then several processes were carried out including solving the first order digital characteristics of random angle errors, establishing the angle error validity evaluation criterion according to the miss distance, and calculating the validity probability of angle error. Simulation results show that the angle error caused by the dual stealth aircraft coherent jamming is relatively larger and the random fluctuation is weak. The stable jamming effect and large error validity probability to radar can insure the security of formation penetration.
- monopulse radar /
- dual stealth aircraft formation /
- coherent jamming /
- random angle error /
- error validity probability

HTML全文

图 1 双隐身飞机自卫式干扰场景

Figure 1. Dual stealth aircraft self-defense jamming scene

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图 2 双机纵向编队飞行航迹

Figure 2. Dual aircraft longitudinal formation track

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图 3 双机协同等效干扰场景

Figure 3. Dual aircraft coordination equivalent jamming scenario

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图 4 评价准则示意图

Figure 4. Evaluation criteria schematic

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图 5 隐身飞机时变RCS

Figure 5. Stealth aircraft time varying RCS

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图 6 双隐身飞机回波幅度比

Figure 6. Echo amplitude ratio of dual stealth aircraft

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图 7 信干比

Figure 7. Signal to jamming ratio

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图 8 随机性角度误差均值与标准差

Figure 8. Random angle error mean and standard deviation

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图 9 误差有效影响概率

Figure 9. Error effective influence probability

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表 1 飞机巡航参数设置

Table 1. Aircraft navigation parameter setting

机身参数	数据
巡航速度/(m·s⁻¹)	500
隐身飞机编队巡航高度/km	10
隐身飞机编队航路捷径/km	32
纵向编队间距/m	280
巡航时间/s	160

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表 2 雷达及干扰参数设置

Table 2. Radar and interference parameter settings

参数设置	数值
雷达平均发射功率/kW	150
雷达发射天线增益/dB	40
雷达接收天线增益/dB	40
雷达接收机带宽/MHz	5
隐身飞机St1干扰功率/W	50
隐身飞机St2干扰功率/W	50
单干扰天线增益/dB	10
单干扰设备损耗/dB	8
单干扰频宽/MHz	32
三代机RCS/dBsm	16

下载: 导出CSV

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